| 摘要 |
<p>The present invention relates to an apparatus for a bicycle burglary alarm by detecting the azimuth by detecting the case that the azimuth of a parked bicycle changes more than a set range according to the movement of the bicycle and generating an alarm signal until the alarm is released, comprising: a gyro sensor for detecting a changed value of the azimuth, eliminating a noise and amplifying the changed value; an azimuth operating part for comparing the initial value of the azimuth, inputted from the gyro sensor, with the changed value, and if the changed value is more than a set range, outputting the alarm signal until a stop signal is inputted; a switch for connecting to the azimuth operating part and stopping the output of the alarm signal; an alarm part for outputting the alarm signal according to a control signal of the azimuth operating part; and a constant voltage part connected to each functional component for receiving a power from a battery and regulating the received power to a low voltage of 3.3 volt. The present invention can correctly detect the burglary state of the bicycle, can continuously generate the alarm signal until the alarm is released by sensing the case that the azimuth changes more than a set range while discriminating the case that the bicycle is shocked or simply falls down, and can rapidly detect an illegal movement state of the bicycle if being attached to an object easy to move including a handbag or a purse. [Reference numerals] (1010) Gyro sensor</p> |
